diff --git a/cv3/program.c b/cv3/program.c
index 78e4ead..791742d 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -21,7 +21,7 @@ int main() {
     length = count;
 
     for (int y = 0; y < length; y++ ){
-	if ( isInteger(coefs[y]) == 0){
+	if ( isdigit(coefs[y]) == 0){
 		printf("Nepodarilo sa nacitat polynom na %d mieste.", y);
 		break;
 	}